package thread;

public class SyncDemo3 {
    public static void main(String[] args) {
        Thread t1 = new Thread(Boo::doSome);
        Thread t2 = new Thread(Boo::doSome);
        t1.start();
        t2.start();
    }
}

class Boo {
    public synchronized static void doSome() {
        synchronized (Boo.class) {
            Thread t = Thread.currentThread();
            System.out.println(t.getName() + "正在执行doSome方法");

            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(t.getName() + "执行方法完毕");
        }
    }
}